Unit 1: 8051 Microcontroller (General Questions and Answers) Question 1 (6 Marks): Differentiate between a microprocessor and a microcontroller. Question 2 (6 Marks): Briefly describe the 8051 microcontroller architecture with the help of a block diagram. Answer: The 8051 microcontroller follows the Harvard architecture, separating program memory from data memory. Key components include: Central Processing Unit (CPU): Processes instructions, performs calculations, and controls program flow. It consists of: Arithmetic Logic Unit (ALU) for arithmetic and logical operations. Control Unit (CU) for fetching, decoding, and executing instructions. Registers for temporary data storage and program control. Question 3 (6 Marks): Explain the functionalities of any three 8051 microcontroller pins with the help of a pin diagram. Answer: Port 0 (P0.0 - P0.7): 8-bit bidirectional I/O port. Each pin can be configured as input or output for connecting with external devices (sensors, LEDs, etc.). ALE (A...
Easy language, to the point, Notes and answer keys of exam
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